The Prince will be visiting the Royal London Hospital to attend an event that is marking 30 years of London's Air Ambulance.

As William was a former air ambulance pilot from 2015-2017, while his family was living in Norfolk, he has a vested interest in the event.

Kensington Palace posted about it on Twitter:

The Duke of Cambridge will visit @LDNairamb on Wednesday 9th January to recognise the work that their first responders carry out delivering life-saving treatment across London. pic.twitter.com/ogRop3BvD5